Compound for covering belt-pulleys



(No Model.) y A. L. 8u W. J. HUSTON.

COMPOUND FOR GOVERING BELT PULLEYS.

Ground F/'bre i Glue Rye F/our d, Alum WITNESS-Es. lNvENToRs,

ARTHUR L. nUsToN AND WILLIAM J. nUsToN, OFPHILADELPHIA,

' PENNSYLVANIA.

SPECIFICATION forming part of Letters Patent No.,520,992,.dated June 5, 1894. Application tiled November 20, 1893. Serial No. 491,427. (No specimens.)

To all whom i#a may concern: Y

Be it known hat we, ARTHUR L I-IUsToN 'and WILLIAM J. USTON, both citizens of the United States, and residents of Philadelphia, Pennsylvania, have-invented certainlm rovements in Compounds for- Covering Be t-Pul.

ening the hold of the belt thereupon, and this.

object we attain in the manner hereinafter set forth, reference being had to the accompanying drawing which represents a transverse section of part of vthe rim of va pulley thaving the compound applied thereto.

Our compound, in the preferred form, is as "follows: ground paper, rags, pulp, or like fibrous material, ten pounds; glue, two

pounds; rye flour, one pound; sal soda, one

ounce; sal ammoniac, one ounce; borax, onehalf ounce; alum, one-half ounce; alcohol, one pint. These ingredients-ere mixed together in\the form of a'thick paste or mortar, Suiicient Waterl being added, if necessary, for the purpose. The face'of the pulley is cleaned with lye or soap and water 'and then wiped dry and the compound is-then spread upon the face of the lpulley s'o as to form alayer of any desired thickness, this layer being shaped to give any desired amount of crown to the belt receiving surface of' the pulley, and while the compound is still in a soft state fine wire is by preference wrappedaround the pulley and drawn through the composition until it reaches theface ofthe pulley, the ends of the Wire beingproperly secured and the layer of composition being then smoothed over toform a continuous surface, or wire gauze or like material may be used instead of the lwrapped wire.` v

`In the drawing op represents the rim of the pulley, b the wire wrapped around the same,

and d the layer of composition forming th driving surface of the pulley.

' The. ground paper or other fibrous-material constitutes the bulk orbody of. our improved composition, thevglue, rye flour and alum being used as a cement for the purpose of uniting the fibrous particles in a coherent and homogeneous mass; The sal-sodaand bor-ax being salts having a tendency to absorbmoist` lure, serve to temper the compound and `prevent it frombecomingbrittle or friable when it is used in places where the air is verydry. The function of the sal-ammoniac is to cause the rusting or oxidizi-ng of the face of the pulleyand its wire Wrapping so as to increase the hold of the composition upon the same. The litharge has the elfect of hardening the composition, and the alcohol is employed for the purpose of hastening the drying of the layer of compound after the same has been applied to the face of the pulley and also for the purpose of preventing the compound from becoming sour when exposed tothe air.

When the compound is intended for use in places where the air is always more or less charged with moisture, the use in the compound of the absorbent salts, such as sal-soda or borax may not be necessary, and while we preferthe use of the glue, rye liour and alum as the cementing medium for unitingthe fibrous particles of the compound, other cementing or uniting agents soluble in water might be employed without departing from the main fea' tures of our invention, and other oxidizing agents than sal-ammoniac may be availed of, while in caseswhere the properties imparted to the compound by the litharge and alcohol are not important, these ingredients may be omitted. The proportions of the ingredients may also be varied within considerable limits, depending upon the desired possession by ingthe driving surface of a pulley, said compound consisting of groundfibrous material,

ace'menting agent soluble in water, andv an yabsorbent of moisture, such as sal-soda or borax, substantially as specified.

3. The within described compound for form= i -'951 2. The wit-hin described compound for formroo ing the driving surface of a pulley said compound consisting of fibrous material, a cementing agent soluble in water, and an oxidizing agent, such as sal-ammoniac, the whole 5 constitutingacoiiering,liomogeneous,mortarlike mass substantially as specified.

4. lhe within described compound for forining the driving surface cfa pulley, said compound consisting of fibrous material, a ce- 1o inenting agent, and litharge, substantially as specified.

5. The within described compound for forming the driving surface of a pulley, said com` pound consisting of fibrous material, a oelnenting agent, a moisture absorbent, such as 15 sal-soda or borax, an oxidizing agent, such as sal-ammoniac, and a hardening material, such as litharge, substantially as specified.

In testimony whereof we have signed our names to this specification in the presence of vzo `two subscribing witnesses.

ARTHUR L. HUSTON. WILLIAM J. HUSTON. Witnesses:

FRANK BECHTOLD, J osEPH H. KLEIN. 

